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// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.container.logging;
import com.yahoo.io.IOUtils;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.TemporaryFolder;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.logging.Formatter;
import java.util.logging.Level;
import java.util.logging.LogRecord;
import java.util.logging.SimpleFormatter;
import java.util.zip.GZIPInputStream;
import static org.assertj.core.api.Assertions.assertThat;
/**
* @author Bob Travis
* @author bjorncs
*/
public class LogFileHandlerTestCase {
@Rule
public TemporaryFolder temporaryFolder = new TemporaryFolder();
@Test
public void testIt() throws IOException {
File root = temporaryFolder.newFolder("logfilehandlertest");
LogFileHandler h = new LogFileHandler();
h.setFilePattern(root.getAbsolutePath() + "/logfilehandlertest.%Y%m%d%H%M%S");
h.setFormatter(new Formatter() {
public String format(LogRecord r) {
DateFormat df = new SimpleDateFormat("yyyy.MM.dd:HH:mm:ss.SSS");
String timeStamp = df.format(new Date(r.getMillis()));
return ("["+timeStamp+"]" + " " + formatMessage(r) + "\n");
}
} );
long now = System.currentTimeMillis();
long millisPerDay = 60*60*24*1000;
long tomorrowDays = (now / millisPerDay) +1;
long tomorrowMillis = tomorrowDays * millisPerDay;
assertThat(tomorrowMillis).isEqualTo(h.getNextRotationTime(now));
long[] rTimes = {1000, 2000, 10000};
h.setRotationTimes(rTimes);
assertThat(tomorrowMillis+1000).isEqualTo(h.getNextRotationTime(tomorrowMillis));
assertThat(tomorrowMillis+10000).isEqualTo(h.getNextRotationTime(tomorrowMillis+3000));
LogRecord lr = new LogRecord(Level.INFO, "test");
h.publish(lr);
h.publish(new LogRecord(Level.INFO, "another test"));
h.rotateNow();
h.publish(lr);
h.flush();
}
@Test
public void testSimpleLogging() throws IOException {
File logFile = temporaryFolder.newFile("testLogFileG1.txt");
//create logfilehandler
LogFileHandler h = new LogFileHandler();
h.setFilePattern(logFile.getAbsolutePath());
h.setFormatter(new SimpleFormatter());
h.setRotationTimes("0 5 ...");
//write log
LogRecord lr = new LogRecord(Level.INFO, "testDeleteFileFirst1");
h.publish(lr);
h.flush();
}
@Test
public void testDeleteFileDuringLogging() throws IOException {
File logFile = temporaryFolder.newFile("testLogFileG2.txt");
//create logfilehandler
LogFileHandler h = new LogFileHandler();
h.setFilePattern(logFile.getAbsolutePath());
h.setFormatter(new SimpleFormatter());
h.setRotationTimes("0 5 ...");
//write log
LogRecord lr = new LogRecord(Level.INFO, "testDeleteFileDuringLogging1");
h.publish(lr);
h.flush();
//delete log file
logFile.delete();
//write log again
lr = new LogRecord(Level.INFO, "testDeleteFileDuringLogging2");
h.publish(lr);
h.flush();
}
@Test
public void testSymlink() throws IOException, InterruptedException {
File root = temporaryFolder.newFolder("testlogforsymlinkchecking");
LogFileHandler h = new LogFileHandler();
h.setFilePattern(root.getAbsolutePath() + "/logfilehandlertest.%Y%m%d%H%M%S%s");
h.setFormatter(new Formatter() {
public String format(LogRecord r) {
DateFormat df = new SimpleDateFormat("yyyy.MM.dd:HH:mm:ss.SSS");
String timeStamp = df.format(new Date(r.getMillis()));
return ("["+timeStamp+"]" + " " + formatMessage(r) + "\n");
}
} );
h.setSymlinkName("symlink");
LogRecord lr = new LogRecord(Level.INFO, "test");
h.publish(lr);
String f1 = h.getFileName();
String f2 = null;
while (f1 == null) {
Thread.sleep(1);
f1 = h.getFileName();
}
h.rotateNow();
Thread.sleep(1);
f2 = h.getFileName();
while (f1.equals(f2)) {
Thread.sleep(1);
f2 = h.getFileName();
}
lr = new LogRecord(Level.INFO, "string which is way longer than the word test");
h.publish(lr);
h.waitDrained();
File f = new File(f1);
long first = f.length();
f = new File(f2);
long second = f.length();
final long secondLength = 72;
for (int n = 0; n < 20 && second != secondLength; ++n) {
Thread.sleep(1);
second = f.length();
}
f = new File(root, "symlink");
long link = f.length();
assertThat(secondLength).isEqualTo(link);
assertThat(31).isEqualTo(first);
assertThat(secondLength).isEqualTo(second);
}
@Test
public void testcompression() throws InterruptedException, IOException {
File root = temporaryFolder.newFolder("testcompression");
LogFileHandler h = new LogFileHandler(true);
h.setFilePattern(root.getAbsolutePath() + "/logfilehandlertest.%Y%m%d%H%M%S%s");
h.setFormatter(new Formatter() {
public String format(LogRecord r) {
DateFormat df = new SimpleDateFormat("yyyy.MM.dd:HH:mm:ss.SSS");
String timeStamp = df.format(new Date(r.getMillis()));
return ("["+timeStamp+"]" + " " + formatMessage(r) + "\n");
}
} );
int logEntries = 10000;
for (int i = 0; i < logEntries; i++) {
LogRecord lr = new LogRecord(Level.INFO, "test");
h.publish(lr);
}
h.waitDrained();
String f1 = h.getFileName();
assertThat(f1).startsWith(root.getAbsolutePath() + "/logfilehandlertest.");
File uncompressed = new File(f1);
File compressed = new File(f1 + ".gz");
assertThat(uncompressed).exists();
assertThat(compressed).doesNotExist();
String content = IOUtils.readFile(uncompressed);
assertThat(content).hasLineCount(logEntries);
h.rotateNow();
while (uncompressed.exists()) {
Thread.sleep(1);
}
assertThat(compressed).exists();
String unzipped = IOUtils.readAll(new InputStreamReader(new GZIPInputStream(new FileInputStream(compressed))));
assertThat(content).isEqualTo(unzipped);
}
}
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